Writing instrument



FIG. 1 is a perspective view of the top, front and right side of a writing instrument according to a first embodiment showing my new design,

FIG. 2 front elevational view thereof;

FIG. 3 rear elevational view thereof;

FIG. 4 right side elevational view thereof;

FIG. 5 left side elevational view thereof;

FIG. 6 top plan view thereof;

FIG. 7 bottom plan view thereof;

FIG. 8 perspective view of the top, front and right side of a writing instrument according to a second embodiment thereof;

FIG. 9 is a front elevational view thereof;

FIG. 10 is a rear elevational view thereof;

FIG. 11 is a right side elevational view thereof;

FIG. 12 is a left side elevational view thereof;

FIG. 13 is a top plan view thereof; and,

FIG. 14 is a bottom plan view thereof. 

The ornamental design for a writing instrument, as shown and described. 